diff --git a/googletest/include/gtest/gtest-printers.h b/googletest/include/gtest/gtest-printers.h
index 1ba5178..d1766e6 100644
--- a/googletest/include/gtest/gtest-printers.h
+++ b/googletest/include/gtest/gtest-printers.h
@@ -43,6 +43,9 @@
 //   1. foo::PrintTo(const T&, ostream*)
 //   2. operator<<(ostream&, const T&) defined in either foo or the
 //      global namespace.
+// * Prefer AbslStringify(..) to operator<<(..), per https://abseil.io/tips/215.
+// * Define foo::PrintTo(..) if the type already has AbslStringify(..), but an
+//   alternative presentation in test results is of interest.
 //
 // However if T is an STL-style container then it is printed element-wise
 // unless foo::PrintTo(const T&, ostream*) is defined. Note that
@@ -112,6 +115,10 @@
 #include <utility>
 #include <vector>
 
+#ifdef GTEST_HAS_ABSL
+#include "absl/strings/internal/has_absl_stringify.h"
+#include "absl/strings/str_cat.h"
+#endif  // GTEST_HAS_ABSL
 #include "gtest/internal/gtest-internal.h"
 #include "gtest/internal/gtest-port.h"
 
@@ -260,6 +267,18 @@
 #endif
 };
 
+#ifdef GTEST_HAS_ABSL
+struct ConvertibleToAbslStringifyPrinter {
+  template <
+      typename T,
+      typename = typename std::enable_if<
+          absl::strings_internal::HasAbslStringify<T>::value>::type>  // NOLINT
+  static void PrintValue(const T& value, ::std::ostream* os) {
+    *os << absl::StrCat(value);
+  }
+};
+#endif  // GTEST_HAS_ABSL
+
 // Prints the given number of bytes in the given object to the given
 // ostream.
 GTEST_API_ void PrintBytesInObjectTo(const unsigned char* obj_bytes,
@@ -308,6 +327,9 @@
   using Printer = typename FindFirstPrinter<
       T, void, ContainerPrinter, FunctionPointerPrinter, PointerPrinter,
       ProtobufPrinter,
+#ifdef GTEST_HAS_ABSL
+      ConvertibleToAbslStringifyPrinter,
+#endif  // GTEST_HAS_ABSL
       internal_stream_operator_without_lexical_name_lookup::StreamPrinter,
       ConvertibleToIntegerPrinter, ConvertibleToStringViewPrinter,
       RawBytesPrinter, FallbackPrinter>::type;
diff --git a/googletest/include/gtest/internal/gtest-port.h b/googletest/include/gtest/internal/gtest-port.h
index 514b1cc..656df26 100644
--- a/googletest/include/gtest/internal/gtest-port.h
+++ b/googletest/include/gtest/internal/gtest-port.h
@@ -1146,47 +1146,6 @@
   return x;
 }
 
-// When you upcast (that is, cast a pointer from type Foo to type
-// SuperclassOfFoo), it's fine to use ImplicitCast_<>, since upcasts
-// always succeed.  When you downcast (that is, cast a pointer from
-// type Foo to type SubclassOfFoo), static_cast<> isn't safe, because
-// how do you know the pointer is really of type SubclassOfFoo?  It
-// could be a bare Foo, or of type DifferentSubclassOfFoo.  Thus,
-// when you downcast, you should use this macro.  In debug mode, we
-// use dynamic_cast<> to double-check the downcast is legal (we die
-// if it's not).  In normal mode, we do the efficient static_cast<>
-// instead.  Thus, it's important to test in debug mode to make sure
-// the cast is legal!
-//    This is the only place in the code we should use dynamic_cast<>.
-// In particular, you SHOULDN'T be using dynamic_cast<> in order to
-// do RTTI (eg code like this:
-//    if (dynamic_cast<Subclass1>(foo)) HandleASubclass1Object(foo);
-//    if (dynamic_cast<Subclass2>(foo)) HandleASubclass2Object(foo);
-// You should design the code some other way not to need this.
-//
-// This relatively ugly name is intentional. It prevents clashes with
-// similar functions users may have (e.g., down_cast). The internal
-// namespace alone is not enough because the function can be found by ADL.
-template <typename To, typename From>  // use like this: DownCast_<T*>(foo);
-inline To DownCast_(From* f) {         // so we only accept pointers
-  // Ensures that To is a sub-type of From *.  This test is here only
-  // for compile-time type checking, and has no overhead in an
-  // optimized build at run-time, as it will be optimized away
-  // completely.
-  GTEST_INTENTIONAL_CONST_COND_PUSH_()
-  if (false) {
-    GTEST_INTENTIONAL_CONST_COND_POP_()
-    const To to = nullptr;
-    ::testing::internal::ImplicitCast_<From*>(to);
-  }
-
-#if GTEST_HAS_RTTI
-  // RTTI: debug mode only!
-  GTEST_CHECK_(f == nullptr || dynamic_cast<To>(f) != nullptr);
-#endif
-  return static_cast<To>(f);
-}
-
 // Downcasts the pointer of type Base to Derived.
 // Derived must be a subclass of Base. The parameter MUST
 // point to a class of type Derived, not any subclass of it.
diff --git a/googletest/test/googletest-printers-test.cc b/googletest/test/googletest-printers-test.cc
index f44f29a..bee0ca4 100644
--- a/googletest/test/googletest-printers-test.cc
+++ b/googletest/test/googletest-printers-test.cc
@@ -55,6 +55,10 @@
 #include "gtest/gtest-printers.h"
 #include "gtest/gtest.h"
 
+#ifdef GTEST_HAS_ABSL
+#include "absl/strings/str_format.h"
+#endif
+
 // Some user-defined types for testing the universal value printer.
 
 // An anonymous enum type.
@@ -119,6 +123,19 @@
   os << "StreamableInGlobal*";
 }
 
+#ifdef GTEST_HAS_ABSL
+// A user-defined type with AbslStringify
+struct Point {
+  template <typename Sink>
+  friend void AbslStringify(Sink& sink, const Point& p) {
+    absl::Format(&sink, "(%d, %d)", p.x, p.y);
+  }
+
+  int x = 10;
+  int y = 20;
+};
+#endif
+
 namespace foo {
 
 // A user-defined unprintable type in a user namespace.
@@ -317,6 +334,11 @@
   EXPECT_EQ("invalid", Print(static_cast<EnumWithPrintTo>(0)));
 }
 
+#ifdef GTEST_HAS_ABSL
+// Tests printing a class that defines AbslStringify
+TEST(PrintClassTest, AbslStringify) { EXPECT_EQ("(10, 20)", Print(Point())); }
+#endif
+
 // Tests printing a class implicitly convertible to BiggestInt.
 
 TEST(PrintClassTest, BiggestIntConvertible) {
@@ -1636,6 +1658,12 @@
   EXPECT_STREQ("StreamableInGlobal", PrintToString(r).c_str());
 }
 
+#ifdef GTEST_HAS_ABSL
+TEST(PrintToStringTest, AbslStringify) {
+  EXPECT_PRINT_TO_STRING_(Point(), "(10, 20)");
+}
+#endif
+
 TEST(IsValidUTF8Test, IllFormedUTF8) {
   // The following test strings are ill-formed UTF-8 and are printed
   // as hex only (or ASCII, in case of ASCII bytes) because IsValidUTF8() is